Page-printing telegraph.



No. 653,935. Patented my I7, |900.

. n. MURRAY.

PAGE PRINTING TELEGRAPH.

Application led Feb. 7,1900;) (No Model.) 2 Sheets-Sheet l.

rv-n: cams PETERS co, PHoYoALn'uo.. wunmsvau, n. c.

No. (553,935. Patented Iuly I7, 1900.

D. MURRAY. PAGE PRINTING TELEGRAPH.

(Application led Feb. 7,1900.) (no Model.) 2 sheets-'sham 2.

WITNESSES: l WEN'ngm:

1H: Nonms PrrzRs co. PHoTo-Lrmo.. WASHINGTON. D. c.

NiTED STATES PATENT OFFICE.

DONALD MURRAY, OF NEW YORK, N. Y., ASSIGNOR TO THE POSTAL TELE- GRAPH-CABLE COMPANY, OF SAME PLACE.

PAGE-PRINTING TELEGRAPH.

SPECIFICATION forming part of Letters Patent No. 653,935, dated July 17, 1900. Application nea retrumy 7, 1900. serai No. 4,311 (No model.)

T all whom it -may concern:

Be it known that 1, DONALD MURRAY, a subject of the Queen of Great Britain, residing in the city of New York, county and State of New York, have made certain new and useful Improvements in Page-Printing Telegraphs, of which the following is a specification.

My invention relates to a page-printing tele- Io graph apparatus employing a transmitter at one station, with an electromagnetic perforator at the second station, and means for operating a type-Writing machine controlled by the perforated medium.

` The object of my inven tion is to perforate or prepare a strip or medium, like a paper tape, at the receiving-station more rapidly and accurately than has heretofore been possible.

My electromagnetic perforator embodies a zo device for feeding ,the paper along step by step and for perforating said tape in accordance with an arbitrary alphabet. This alphabet divides the tape or medium into a series of successive adjacent sections, each section be- :5 ing subdivided by arbitrarily-arranged perforations and unperforated spaces between such perforations. The described sections are equal in extent and each` section is divided, as described, into five subdivisions equal in extent. Means are provided for operating the punch and the vpaperfeeding mechanism, which consists in each case of an electromagnet in a local circuit operated-by a main-line relay. There are thus two local circuits and two main-linerelays. One relay responds to current impulses of one polarity and the other relay to current impulses of opposite polarity. At the transmittingstation there is a transmitter embodying 4o means for throwing upon the line electric impulses of either polarity. Uniform intermittent impulses of one polarity operate the paper feeding or spacing mechanism and impulses of opposite polarity operate the punching mechanism. i

To provide against accidental interference between the .spacing-magnet in one circuit and the punching-magnet in the other circuit due to anyI abnormal action of the main-line 5o relays, I cause the local circuit of one magnet to pass through break-points controlled by the other magnet, and vice versa. By this means the punching and the spacing operations are invariably successive and cannot interfere.

The accompanying drawings illustrate my invention.

Figure 1 is a complete plan view ofthe transmitting and receiving apparatus located at separate stations. Fig. 2 shows a type-writ- 6o ing machine with an actuating device connected thereto which is governed by the perforated tape. Fig. 3 is a detail View of the controlling-tape with a single word perforated therein. Below the tape is a diagrammatic representationnof the line-currents effective to 'produce the perforation and spacing represented.

vThere is a transmitting-station h and a receiving-station c. The stations are connected 7o by a main telegraph-Wire a. At the transmitting-station there is a transmitter t, consisting of a series ofoindependent pivoted levers, each having spring contact-points 16 and a retracting device 19. There are three cylinders 10 11 12 geared together and rotating in the same direction, and there are two main-line batteries 13vand 14 of respectively opposite polarity. 13 is connected to the cylinder 11 through the medium of a brush and 8o insulated ring in a well-known manner. The battery 14 is similarly connected with the cylinder 12.

e 10 is a retaining-cylinder having a series of grooves 18, one for each key, and each key has a hooked finger, like 17. Each groove 18 opens through the periphery or surface of the cylinder at a unison-point, and when any key is depressed its hook,17 enters the groove in the cylinder at the unison-point and can only 9o leave it after a complete rotation, while the other keys are locked out of action. On each of the cylinders 11 and 12 are a series of contacts or projections 15, rotated in line to engage the spring-fingers 16 alternately. Each 95 of these cylinders is constructed with contactpoints of uniform length and arbitrary succession. Thisis done by dividing the circumference into six equal parts, and each such part is divided into two subdivisions to produce roo either a make or a break in alternation with the corresponding make or break simultaneously presented by the other cylinder at the coincidently with the feed-holes 7L.

contact-point. To provide for the interval of no operation corresponding to the space at the unison-point on the cylinder 10, the corresponding subdivision is omitted from each of the other cylinders. By the arrangement described cylinder 11 is enabled to throw upon the line'elect-ric impulses of one polarity, uniformly intermittent, while cylinder 12 throws upon the line impulses of opposite polarity at intermediate and arbitrary intervals, in accordance with the relative location of the perforation in a letter-section of the tape. By referring to Fig. 3 it will be seen that the op? eration of the cylinder 11 is graphically represented in the lower half of the diagram and that the operation of the cylinder 12 in transmitting the word Paris appears immediately above theline dividing the two classes of impulses. At the receiving-station there are two main-line polarized relays 100 and 101, and there is an electromagnetic perforator, consisting of a punch 50, working upon the tape e through a guide 51. The punch 50 is suspended from an angular lever 52, pivoted at 5S, which also carries the armature of the local magnet 200. This armature is springretracted. 56 is a star-wheel the teeth upon the periphery of which engage feed-holes 7L in the paper tape e. Said wheel is on a motor-driven shaft 57 under the control of anV escapement 55 on a shaft 54, carrying the angular lever 53, to which is fixed thevarmature of the local magnet 201. This armature is also spring-retracted. The local battery S0 is common to both local circuits. The relay 100 operates break-points 90 and 91 in a local circuit with magnet 200. This circuit eX- tends from the fixed contact 91, via the elements 86, fixed contact 61, movable contact 62 85, coil of magnet 200 84, and batterS7 80 '70, to the movable contact 90. It will be noticed that the relay 100 operates the local magnet 200 through a local circuit including breakpoints 61 and 62, controlled by the magnet 201. The main-line relay 101 operates'the magnet 201 in a similar manner through a similar local circuit. 92 and 93 are break-points controlled by the relay 101. Circuit passes from 93, via 83, 60, 59, 82, coils of magnet 201 81, and battery 8O '70, to the movable contact 92. The tape e having been prepared with a central line of feed-holes h is perforated, as shown in Fig. 3.

In Fig. 2 I have shown the type-writing machine m, having a series of :independent keylevers 7s. This type-writer is located upon an actuating device d. This actuator comprises a series of notched bars or combs arranged in parallel relation and capable of taking a reciprocating motion individually and collectively. The ends or terminals are pointed,and said ends are presented at the rear of the feedwheel w, around which the tape e, having a series of central feed-holes h, passes. The wheel w has a series of pins or projections in its periphery spaced to present themselves.

Motive power is supplied by any suitable motor connected to the shaft carrying the driving-wheel n, which is geared to the cam-shaftj, through which the operation of the apparatus is effected. There is a series of parallel levers 7l arranged side by side transversely above the combs before referred to, and each of the bars t' is connected with a key-lever k through a flexible connecting device,like g,which passes around suitable pulleys, substantially as shown. The levers are allowed to` drop into effective operative position whenever the paper tape in its progressive movement, section after section, has allowed the arrangement of the combs in such a position that a series of notches, one in each comb, presents itself to one of the series of levers ,'and when this .occurs that particular one of the series of levers t' which is over a completely-ahmed series of slots in the combs is allowed to drop and through intermediate mechanism operates its key-lever 7c, and a letter is imprinted upon the page. The tape e shown in Fig. 1 is connected to the end of the tape e shown in Fig. 2 when the apparatus is in operation. The actuator described and illustrated by me as operating the type-writer is shown, described, and claimed in United States Letters Patent No. 638,591, issued to me December 5, 1899, for improvements in actuating mechanism for key-operated machines, to which reference may be had for more detailed information.

The operation of the apparatus is as follows: Let us assume that the last letter s hown on the tape in Fig. 3 is to be transmitted-.- that is, the letter s. This consists of aperforation in the first and third subdivisions of a tape-letter space, the second, fourth, and fifth subdivisions being un perforated. lIf the key ofthe transmitter 15 shown were depressed and the projections shown on the cylinders presented themselves to the contacts, the result would be the perforation of this letter. The current impulses would be as shown in the line 30, Fig. 3, the impulses occurringin the following order: positive,negative, break, negative, positive, negative, break, negative, break, negative. The result is the perforation of the letter s as it appears at the end of the word Paris, and the tape e being fed along by the feeding devices of both machines presents the section of the tape 31 bearing the letter s7 between the feed-wheelw and the combs, which are immediately controlled by the vaction of the tape. It results that these combs are alined with a clear passage or slot under the particular levert' assigned to the letter s, and at this instant a striking device operated by the motor-driven actuator d engages a sliding terminal of the corresponding cord g, which draws down the corresponding key la, and the letter is imprinted.

By referring to Fig. 1 it will be noticed that I have provided a means for avoiding the evil effects of a spark at the break-points controlled by the various magnets. This con- IOO sists of a condenser y and an artificial resistance connected in series across the breakpoints.

What I claim, and desire to secure by Letters Patent, is-

l. The combination of a main telegraphline and a pole-changing transmitter at one station with an electromagnetic perforator, including a reciprocating punch and a paperfeeding device, at a second station, a polarized main-line eleotromagnet controlling the paper-feed, and a polarized main-line electromagnet controlling the punch, both said magnets having their coils in said main line.

2. The combination of a main telegraphline, a transmitter having means for throwing upon the line current impulses of either polarity and uniform intermittent impulses of one polarity, a perforating device located at a second station including a punch and a paper feeding or spacing mechanism, an electromagnet in the main line controlling said paper-feeding mechanism responsive to impulses of one polarity, and an electromagnet in the main line controlling said punch responsive to current impulses of opposite polarity.

3. The combination with a perforating device including a reciprocating punch, and a step-by-st-ep mechanism for advancing the tape, of an electromagnet for operating the punch, an electromagnet controlling the stepby-step mechanism, a local circuit for one of said magnets, a main-line relay responsive to current impulses of one polarity having its break-points in said local circuit, a local circuit for the other magnet and a main-line relay responsive to current impulses of opposite polarity having its break-points in said local circuit.

4. In a perforator the combination of a reciprocatin g punch, a step-by-step mechanism for advancing the tape, an electromagnet controlling the punch, an electromagnet controlling the step-by-step mechanism, a local circuit for each magnet, an independent circuitbreaker in each circuit and a second circuitbreaker in one of said circuits controlled by said electromagnet in the other of said circuits. v

5. In a perforator the combination of a reciprocating punch and a step-by-step mechanism for advancing the tape, With two electromagnets controlling the punch and stepby-step mechanism respectively, an electric circuit for each magnet and two circuitbreakers, one in each circuit, the circuitbreaker in one circuit being controlled by the electromagnet in the other circuit.

6. The combination of a reciprocating punch, means for advancing the record medium step by step, two electromagnets operating the punching and spacing mechanism respectively, a local circuit for each magnet and two main-line relays operating circuitbreakers in the local circuits, respectively.

'7. The combination of a punch, a spacing device, a magnet operating the punch, a magnet operating the spacing device, a local circuit for each magnet, a circuit-breaker for each magnet, electrical connections between the circuit of one magnet and the circuitbreaker controlled by the other magnet and two polarized relays operating break-points in each local circuit, respectively.

D ON ALD MURRAY.

Witnesses:

THEoDoRE L. CUYLER, Jr., ANNA M. DoNLEvY. 

